Troubleshooting - GMC AC24L Instruction Manual

5. If the release valve under the pressure switch cover (2)
fails to operate when the on/off button is pressed
down, switch the power supply off and determine the
nature of the fault.
6. Ensure that the lubricating oil is clean and that the oil
level is maintained at the mid point of the red circle in
the oil level glass (17)..

Troubleshooting

Trouble
Motor will not run, running too slow or
becoming excessively hot
Main compressor sticking/tight
Vibration or abnormal noise
7. Take care when discharging air from the tank, i.e. from
the safety valve, the drain cock or the air outlet.
Compressed air can be extremely dangerous. Take care
the discharge air does not cause dust, stones or any
other foreign particles to be blown through the air and
that the air is discharged in a safe manner.
Possible cause
1. Power fault or supply voltage too
low
2. Power cord too long or too thin
3. Faulty pressure switch
4. Faulty motor
5. Main compressor sticking/tight
1. Moving parts damaged by heat due
to insufficient lubrication
2. Moving parts damaged or blocked by
foreign particle
1. Loose part
2. Foreign body in main compressor
3. Piston connecting with the valve
seat
4. Moving parts excessively worn
13
Suggested remedy
1. Check the power supply
2. Use authorised service centre to
replace the power cord
3. Use authorised service centre to
repair or replace the switch
4. Use authorised service centre to
repair or replace the motor
5. Use authorised service centre to
repair or replace faulty parts.
Use authorised service centre to check
crankshaft, bearings, con rod, piston
rings, etc and replace where necessary.
1. Use authorised service centre to
check and repair if necessary
2. Use authorised service centre to
check and clean if necessary
3. Use authorised service centre to
increase size of gasket
4. Use authorised service centre to
repair or replace